Article made of oxidation-resistant carbon-carbon composite material with an SiC-doped matrix and process for its manufacture

摘要

The article according to the invention comprises a fibrous preform (2) consisting solely of carbon fibres (4) and embedded in a carbon matrix (6) whose porosities (7, 8) contain ultrafine SiC powder (10) acting as a barrier to gas diffusion, the quantity of SiC powder representing from 5 to 30% by weight of the preform-matrix combination. This article can resist oxidation up to 1700@C without external protection. <IMAGE>